![]() The Climate Hydrology Assessment Tool (CHAT) presents projected temperature, precipitation, and streamflow for 64 combinations of climate model and greenhouse gas emissions scenario, at the scale of the HUC-8 watershed. The Timeseries Toolbox also performs time series modeling, breakpoint analysis, seasonal decomposition, and statistical summaries of user-provided data. The Time Series Toolbox and Nonstationarity Detector are two tools to perform statistical tests for changes in observed data and identify the timing and nature of those changes. A series of 21 summaries of scientific literature, organized by two-digit hydrologic unit code (HUC), simplifies the review of scientific articles relevant to project locations. To aid teams in performing these analyses, USACE has produced a suite of resources, several of which are publicly available. Teams follow four basic steps to characterize potential project vulnerabilities to the effects of climate change on inland hydroclimatology: a review of available scientific literature, statistical detection of trends and changes in observed data, examination of projected future hydroclimatology based on climate modeling, and assessment of business-line specific indicators of project performance risks. For inland hydrologic analyses, USACE teams implement the CISA using the guidelines in Engineering and Construction Bulletin 2018- 14 Guidance for Incorporating Climate Change Impacts to Inland Hydrology in Civil Works Studies, Designs, and Projects. The effects of climate change on pluvial, riverine, and lake flood risk is more complex and uncertain than the effects of sea level change. More information on these tools may be found here. USACE has also produced a static atlas of observed sea level change for offline viewing, and a calculator specifically for the high-subsidence environment of coastal Louisiana. ![]() ![]() The Sea Level Tracker also allows plotting and tabulation of the three USACE scenarios, alongside linear trendlines and computed water levels of various frequencies and averaging periods, based on observations. The Sea Level Curve Calculator allows the user to plot and tabulate the three USACE sea level scenarios for any NOAA National Water Level Observation Network (NWLON) tide gage with sufficient period of record, along with coastal extreme water levels, other federal and local scenarios, tidal and geodetic datums, and water elevations critical to project performance. Engineer Pamphlet Procedures to Evaluate Sea Level Change: Impacts, Responses, and Adaptation provides technical information for how this consideration should be achieved, with techniques specified for each USACE Civil Works business line.Ĭonsideration of relative sea level change is made more accurate, timely, efficient, and reproducible through the use of web-based tools. Engineer Regulation 62 Incorporating Sea Level Change in Civil Works Programs requires USACE Civil Works project delivery teams to consider the effects of sea level change when formulating, selecting, and evaluating project alternatives. In the coastal zone, the effects of relative sea level change have the first and most significant climate impacts on flood hazard. Some projects located in the estuarine transition zone between inland and coastal water bodies may be required to consider both kinds of impacts. The Climate-Informed Science Approach, as implemented by USACE, considers two broad categories of climate change impacts on flood hazard, inland and coastal. Army Corps of Engineers intends to implement the new requirements, explore the sections below. To learn more about the FFRMS and how the U.S. The FFRMS was issued to encourage federal agencies to consider current and future risk when taxpayer dollars are used to build or rebuild near floodplains. On January 20, 2021, EO 13990, Protecting Public Health and the Environment and Restoring Science to Tackle the Climate Crisis, in turn revoked EO 13807, beginning the process of reinstating the Standard. As such, from 2017-2021 USACE continued to implement EO 11988 according to USACE Engineer Regulation (ER). EO 13807 did not revoke or otherwise alter EO 11988, Floodplain Management. Executive Order (EO) 13690, Establishing of a Federal Flood Risk Management Standard and a Process for Further Soliciting and Considering Stakeholder Input, which established the Federal Flood Risk Management Standard (FFRMS), was revoked by Section 6 of EO 13807, Establishing Discipline and Accountability in the Environmental Review and Permitting Process for Infrastructure.
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